Valve for internal combustion engines



June 2, 1925.

P. TRIEFENBACH ET AL VALVE FOR INTERNAL COMBUSTION ENGINES Filed May 31 1923 3 Sheets-Sheet 1 3141.10 row June 2, 1925 P. TRIEFENBACH ET AL VALVE FOR INTERNAL COMBUSTION ENGINES June 2, 1 1,539,975

-P. TRIEFENBACH ET AL VALVE F'OR INTERNAL COMBUSTION ENGINES Filed May 31, 1923 3 Sheets-Sheet 5 $5 4% Patented June 2, 1925.

UNITED STATES PATENT OFFICE.

PETER TRIEFENBAGH, "WILLIAM J". TEIEFENBACH, ALFRED P. TRIEFENEACH, GEORGE L. TRIEFENBACH, AND EDIYIUND A. RILHELUVY, 02 S1. LOUIS, MISSOURI.

VALVE EGR INTERlH-lL-COIVEBUSTION ENGINES.

Application filed Ia-Zay 31, 1923.

To (ii Z whom "it iii [4 7] concern:

lie it known that we, PETER Tinnrmvnzion, \VILmAM J. 'lnInjrnneAm-I, ALFRED P. TRIE- lilllJBiiUlii, Unoizon L. 'lTnncrENn-icn, and ED- item) A. llnirnnow, citizens oi the United States, residing at the city of St. Louis and litate o'f lilissouri, have invented certain new and useful improvements in Valves for i'illjQNWl- .ou'ibustion ilng'ines, of which the 1) Follow is a specification.

'El'zis invention relates to valves iior internal COiiliflllFitlOll engines, and more par- =rly to rotary valves.

1 object of theinvention is to provide cylindrical valve having arcuate ports for the passage of gases to and from the cylinder or cylinders of an internal combustion engine and a hollow interior through which a cooling medium is adapted to be passed.

A. further object of the invention is to provide a valve with greater cooling facilities than most types of puppet and rotary V valves.

35 A further objct oi the invention is to provide a valve of minimum expansion.

A further object of the invention is to provide a valve of one piece construction, without compression head, compression members, packing rings, springs and other inserts common to most types of rotary and puppet valves.

A further object of the invention is to make water connections to and from the valve in such manner as to eliminate leakage into engine cylinders.

A. further object of the invention is to provide a valve so constructed as to permit a single valve n'iember to perform the nec cssary functions "r'or one or a multiple of cylinders.

it. further object of the invention is to provide a valve of a diameter about equal of that of the cylinder bore.

r 'l urther object the provision of a tapering valve member, and means for adjusting it in the valve chamber.

A. further object of the invention is to provide a floating valve supported by bearlugs at each end.

it iurther object of the invention is to provide a valve so arranged to intake and exhaust twice during a complete revolution oil? the valve which is one half the speed comlit.

Serial No. 62,659.

non to most types of rotary and puppet valves.

A further object of the invention is the provision of a valve in which the exhaust ses passing from the cylinder exert a i'orce on the valve member to assist in rotating it.

it further object of the invention is to provide a construction of valve whereby a more economical motor will be produced from th standpoint oi? manufacture. The move objects and their accomplish, nier are obtained by means of the construction illustrated in the accompanying drawings and more fully described in the annexed specification. In this showing:

Figure l is a vertical longitudinal seclional view of a multi-cylinder engine showing the invention applied,

Figure 2 is a longitudinal sectional View (it the valve shown in Figure 1, wherein 7 water or other liquid is employed as a cooling medium,

Figure 3 is a similar view of a modified type of valve in which water and air are both employed as cooling mediums, 90

Figure 4: is a detail longitudinal sectional view of another form of valve,

lligure 5 is a transverse sectional View on line 5-5 of Figure 1,

Figure 6 is a detail longitudinal sectional view of another form of valve,

Figure 7 is a transverse sectional view on line 77 of Figure 6,

Figure 8 is a transverse sectional view on line 88 of Figure 1, Figure 9 is a similar view on line 99 of Figure 1,

Figure 10 is a detail sectional View on line 10-10 of Figure 1, and,

Figures 11, 12, 13, and 1 1 are diagraminaitic views of the four stroke cycles of an engine cylinder showing; the piston in its differentpositions, and also showing; the valve ports.

Referring to the drawings, Figures 1 and 8, the engine cylinders, of which four are shown for purposes of illustration, are designated by the reference numeral 1. These cylinders are provided with pistons 2, arranged therein in the usual manner. 105 The pistons are provided with connecting rods 3, adapted to be connected to the crank shaft in the usual manner. Arranged bearing rings.

lengthwise above the cylinders is a valve chan'iber (i. The valve chamber is provided with inlet openings el. and exhaust openings 5. These openings con'ununicate with the cylinders by means of the port openings 6. A valve 7 is disposed in this chamber and forms a substantially tight fit therein. shown, the valve and valve chamber taper longitudinally. The valve is provided with a plurality of arcuate depressions S and 9, arranged in pairs in alincment with the cylinders of the engine and staggered with respect to each other. These depressions communicate with the cylinders of the engine through port openings 6, whereby the various cylinders of the engine will be in dili' erent parts 01" a cycle of operation at any given time, as is usual, in multi-cylinder internal combustion engines.

In the form of the invention shown in ures l and 8, the character of the valve, with referenceto the bore of cylinders, shows the valve to be about equal in diameter to that of the cylinder bore.

The valve is provided with itXlUCECl ends 10, having threaded portions 11 ol slightly less diameter so as to allow bearing rings 12 to be received on reduced ends. Simil-yr rings 13 of larger dian'ieter are mounted in the valve chamber bearing housings, said rings are adapted to receive the smaller Tapered rollers l3 are arranged between these rings forming the taper roller bearings which support the valve at each end. Suitable ad usting loci:

nuts 14 are arranged on the threaded per-- tions 11 to retain the parts oi. the bearings in position and to adjustthe valve tor clearance within the valve chamber, providing a valve of floating constriu-tion.

ln the form of the invention shown in Figure 2 ot the drawings, the interior of the valve is provided with spiral tins l5. 'lhe construction of the [ins as shown in Figure 2 are heavier at the bottom or outer lace of th valve and taper to a point toward the center of the valve. By being thus structed, greater cooling surface obttor the valve, a minimum of weight and a maximum of strength. 'lhese lins serve to take up expansion due to the excessive heat to which the valve is subjected. The tins in turn radiate the heat which is taken up by the water or other cooling medium passing through the valve. This water or other fluid is delivered by a suitable pump (not shown) through a SilitlllOI'lfllj fitting 3.6 which enters one e d of the valve. 'lhe spiral in arrangement may be adapted to form a propeller or screw :leed for water or other fluid used as a cooling medium. shown, an opening within the valve is provided with a eoncaved depression 17, ad pted to receive a converted face 18 on the end of the fittin Suitable packing 19 is arranged between the fitting and the opening in the end oi the valve member, tollowed by a metallic packing gland 20, and a packing nut 20 retains this gland and packing in position. The water passes from the valve through a stationary fitting 2L. the end which is provided with a concave depression 22, adapted to be received on a convened face 23 in the end of the valve opening. Suitable packing 2 iarranged between the fitting and the opening in the end of the valve member, followed by a metallic packing gland and a packing nut 25 retains this gland and pac i in position.

In the "form of the invention shown in Figure 8 the drawings, the valve is provided with spirally arranged ins bstantially similar to the spiral line 15 shown in Figure The spirally arranged fins 26 perform the same functions as the spiral line; 15, as described in lr igure 2. tube is arranged through tie center lie valve and this tube is other gaseous medium for add' ing of the valve. The air tube is pro". with a flared out or lblhfillfiPQtl end 22', to gather and direct the how of air or other gaseous niediun'i through the tube. The air tube is stationary and passes through special fitting 28 at one end, said lit being acaptcd to convey air or 1 rl l;-

provided with a branch 29 acapted to be connected to a fluid outlet pipe. The i tube is surrounded in the fitting l y t n" able packing 30, "followed by a metallic packing gland 31, and a. packing nut 31 retains this gland and urching in position. The inner end of special fitting 28 is connect ed to another litting 3', received within a bore 33, formed in, the end of the valve. This fitting is provided with a (,(Eilttilifll lepression an, on inner taco, adapted to ceive a convened or ball shaped head tori in the bore of the valve member. It is s rounded in the valve by suitable par-hing followed by a n'ietallic packing gland 36, and a packing nut 36 retains the par gland and packing in position. The consi at the air outlet end is substantially the same as the air inlet end. A fitting 3? is provided through which the air tube fidjacent the point where the air till: er' e from the fittin there is provided s .itable ackin 38 followed bv a i'netallie lltltl{lli,"

gland 39 retained in position by a nut 39. The fitting is pri'ivided wnl a branch 40 arranged at an angle and ad:

to be connected to a suitable pipr': oi oi conduit through which the intake we. passes. lhe inner end of the fitting 2 connected to ntting -l-1, received w bore 42 in the end of the valve. This fitting: is provided with a. convexed end 48. resolved in a concaved depression in the here within the end of the valve. Suitable packing 44: is arranged around the fitting, followed by a metallic packing gland L5, and retained in position by a packing nut ii).

In the form of the invention shown in Figures l and 5 of the drawings, the spiral line are replaced by inwardly projecting lugs These lugs are arranged in series longitudinally with the valve and in staggered relation to each other, as shown in Figure l. The object in staggering these lugs is to retard the flow of water or other .:ooling medium in the valve so to cause it to come in contact with the he ted surfaces of the lugs. When water and both used as cooling mediums, an air tul 4:7 is arranged centrally of the valve. Tine littings and connections on said air tube are identical to those described in Figure In the form or the invention shown in l -igures 6 and T oi the drawings, lugs e8 are employed and arranged in series longitudinally with the valve and in staggered relation to each other, as shown in F igure 6. These lugs differ from lugs shown in Figure 4%, in that they extend lon, ally of the valve. The object in staggering these lugs is identical to those described. in Figures 4- and 5. When water and air are both used as cooling mediums, the air tube l? is arranged. centrally oil the valve. fittings and connections on said air tube are identical to those described in Figure 3.

Figure 9 is an end view of the engine showing one means of driving the valve. In this particular drive, the valve is rotated from the crank shaft by means of a driving chain L9 passing over a sprocket (not shown) on the crank shaft and a sprocket carried by the valve. The valve rotates at one-fourth the speed Oil the crank shaft, whereby the valve makes one-halt a revolution to two complete revolutions oil? the crank shaft or four strokes of the piston. The same result may be accomplished by connecting the said valve and crank shaft with suitable gearing or worm drive.

In Figures 11, 12, 13, and 14 of the drawings, We have diagrammatically illustrated the four stroke cycles of a piston of an engine cylinder showing the positions of the piston in the cylinder with reference to the port openings iu'the valve. The four stroke cycles being the intake, compression, firing and exhaust.

In Figi'ire 11, the piston is about to start its downward or intake stroke and the intake port 4: is about to be placed in communication with the cylinder port opening 3 through the valve port 8. The valve is traveling in a clockwise direction and upon 'l'urther movement, the valve port 8 will be in communication with intake opening a and cylinder port opening 6 permitting a charge of gas to be drawn into the cylinder on the downward stroke of the piston. At the end of this stroke, the ports will be in the posi The tion shown in Figure The valve port 8 will then be out oi conimunieatiou with intake opening l and as the exhaust openii a 5 is not in connnunication with the interior of the cylinder, the upward movement of the piston will compress the charge of manner, igure in the usual shown in 5 During the next stroke, the piston 1OVQS downwardly and at the beginning of the stroke, the valve will be in the position shown in Figure 13. Both the valve ports 8 and are out of communication with the inlet opening a and exhaust opening so that there is no flow of gas either into or out of the cylinder. Just before the beginning ot this stroke, the s is fired inv the usual manner and the power of the exploded gas forces the piston dowi wardly in the usual manner. it the end of the stroke the piston is in the lowered position and the valve ports are in the position shown in Figure 14. Valve port 8 is about to come in communication with the exhaust opening 5 and is still in communication with the cylinder. The valve port 8 remains in communication with the exhaust opening 5 and is still in communication with the cylinder. The valve port 8 remains in communication with the exhaust openingo and cylinder during the upward movement of the piston, and thus the burned gases are discharged from the cylinder. At the end of this stroke, the valve port 9 willbe in the posi tion of valve port 8 in Figure 11 and during the next cycle of the engine, the valve port S) functions to permit communication be tween the cylinder and the exhaust and inlet openings. It will be noted that the valve makes halt a revolution to each complete cycle or two revolutions of the crank shaft.

Referring to Figures 1 and 8 of the drawings, the valve member is mounted in a valve cylinder head 51. The openings 4L and 5 and cylinder port openings 6 extend through this head and are of a size so arranged and spaced to give proper timing for the valve. The valve cylinder head is composed of inner walls 52, forming a chamber to receive the rotary valve. The outer wall conforms to the size and shape of the cylinders, as shown in Figure 8. The hollow space 53 between these two walls forms a cooling space and is adapted to receive water or other cooling medium. The valve cylincer head is also provided with enlarged ends 54, outside the valve chamber, adapted to receive the outer bearing rings and form the rotary valve bearing housings. These enlarged ends have inner and outer walls with. cooling space between. I

The valve cylinder head is rigidly secured and held in place on the engine cylinders by means of bolts or any other suitable method. The head can be so arranged to receive its water or other cooling medium from the cylinder water jacket, or it can be supplied independent directly from the pump. The head is also provided With a suitable outlet to the radiator. Thecylinder port opening and the concave depression directly above the cylinders, forms the cylinder combustion chamber.

It is to be understood that the forms of our invention herewith shown and described are to be taken as preferred examples of the same, and that various changes in the shape, size and arrangement of parts may be resorted to Without departing from the spirit of the invention or the scope of the subjoined claims.

fi'laving thus descril ed our invention We claim:

1. In a device of the character described, a valve chamber, a. rotary valve arranged therein, means for rotating said valve, means for delivering a cooling fluid to the interior at said valve, reinforcing fins spirally arranged on the interior of said valve said reinforcing this being adapted to take up the heat and radiate it to said cooling fluid passing through said valve, means for discharging said fiuid from said valve and an air pipe arranged ithin said valve.

2. In a device of the character described, a valve chamber a rotating hollow valve n'iernber arranged therein, means for delivering a cooling fluid to the interior of said valve member, reinforcing fins spirally arranged on the interior of said valve member, means for discharging said fluid from said valve member, and a centrally disposed tube through which air or other gaseous medium adapted to be passed for additional cooling of said valve member.

3. lo a device of the character described, a valve chamber, a rotating hollow valve nacnibr-r arranged therein, means for deliveriusr a cooling fluid to the interior of said valve member, inwardly projecting lugs in rgered formation arranged on the in or of said valve member means for dis charging said fluid from said valve member, and a centrally disposed tube arranged in said valve member for the passage of a cooling medium for additional cooling of said valve nieinber.

In testimony whereof, We aflix our signatures in presence of two Witnesses.

PETER TRIEFENBAGH. a WlLLlMil J. raisrnneiion. ALFRED P. rninrnnmori. arouse L. TRIEFENBACH. EDMUND A. RAMELOW.

lVitnesses J HN H. E. L NHARDT, V]. L. FAHRENHOLZ. 

